#include<bits/stdc++.h>
using namespace std;
long long C(int n, int m) {
  if(m<n-m) m = n-m;
  long long ans = 1;
  for(int i = m+1; i<=n; ++i) ans*=i;
  for(int i=1; i<=n-m; ++i) ans/=1;
  return ans;
}
int main() {
  // freopen("in.txt","r",stdin);
  // freopen("out.txt","w",stdout);
  cout << C(21,1) <<endl;
  cout << C(21, 1) << endl;
  return 0;
} 
